VAGSuite.Tools.StripNonAsciiCapital C# (CSharp) Метод

        private string StripNonAsciiCapital(string input)
        {
            string retval = string.Empty;
            foreach (char c in input)
            {
                if (c >= 0x30 && c <= 0x39) retval += c;
                if (c >= 0x41 && c <= 0x5A) retval += c;
            }
            return retval;
        }